Sen. Scott Brown (R-Mass.) said that Democrats are making it "awfully tempting" for him to run in a possible special election for Sen. John KerryJohn KerryCutting corners in a federal campaign is criminal Navy investigation concludes Iran broke international law by detaining sailors Top Democrat wants Obama to block Boeing's deal with Iran MORE's (D-Mass.) seat, if Kerry is confirmed as secretary of State.
Rep. Edward MarkeyEd MarkeyDems: Keep gun research ban out of spending bills Overnight Tech: Groups grade Clinton tech agenda | Facebook activates safety check in Istanbul | Another holdup for location data bill Overnight Cybersecurity: US sees drop in Chinese cyberattacks MORE (D) has already announced his intentions to run for the Massachusetts seat. Several national and prominent Massachusetts Democrats, including Kerry himself, threw their support behind Markey last week.
Brown is considered a top GOP contender for the seat. He has dropped hints that he's interested in a run, but hasn't yet made it official.
His comments on the show previewed what could be a possible attack against Markey — questions concerning his residency in Massachusetts.
Markey claims his voting residency in his hometown of Malden, Mass. But he also owns a home in Chevy Chase, Md., and his wife works just outside of D.C.
Questions concerning Markey's residency have been a problem for him in the past. In 2010, his Republican opponent questioned where Markey truly called home, prompting Markey to produce government documents to prove he still has roots in Massachusetts.
A recent poll conducted for the congressman also asked respondents questions concerning his residency, to gauge their potential impact on his candidacy.
Brown was elected to the Senate in 2010 in a special election following the death of longtime Massachusetts Sen. Edward Kennedy. Brown lost his Senate seat in the November election to Democrat Elizabeth WarrenElizabeth WarrenVeep auditions in overdrive Apple, Spotify streaming music dispute heats up Overnight Finance: Senate sends Puerto Rico bill to Obama | Treasury, lawmakers to meet on tax rules | Obama hits Trump on NAFTA | Fed approves most banks' capital plans MORE.